191454912001 has 4 divisors (see below), whose sum is σ = 193244210352. Its totient is φ = 189665613652.

The previous prime is 191454911987. The next prime is 191454912013. The reversal of 191454912001 is 100219454191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100219454191 = 107 ⋅936630413.

It is a cyclic number.

It is not a de Polignac number, because 191454912001 - 2¹¹ = 191454909953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191454912301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894649015 + ... + 894649228.

It is an arithmetic number, because the mean of its divisors is an integer number (48311052588).

Almost surely, 2^191454912001 is an apocalyptic number.

It is an amenable number.

191454912001 is a deficient number, since it is larger than the sum of its proper divisors (1789298351).

191454912001 is a wasteful number, since it uses less digits than its factorization.

191454912001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789298350.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 191454912001 in words is "one hundred ninety-one billion, four hundred fifty-four million, nine hundred twelve thousand, one".